Home / 12,456.39-18,685.65-3,571.74

Finding the Fourth Proportional to 12,456.39, 18,685.65 and 3,571.74

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Solution

The fourth proportional to 12,456.39, 18,685.65 and 3,571.74 is: 5,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.39 : 18,685.65 = 3,571.74 : x
  2. Step 2: Convert to fraction form
    12,456.39/18,685.65 = 3,571.74/x
  3. Step 3: Cross multiply
    12,456.39x = 18,685.65 × 3,571.74
  4. Step 4: Simplify right side
    12,456.39x = 66,740,283.53
  5. Step 5: Solve for x
    x = 66,740,283.53/12,456.39
  6. Step 6: Final answer
    x = 5,357.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.